4646452221 has 8 divisors (see below), whose sum is σ = 6883632960. Its totient is φ = 3097634796.

The previous prime is 4646452201. The next prime is 4646452243. The reversal of 4646452221 is 1222546464.

4646452221 is a `hidden beast` number, since 4 + 6 + 4 + 645 + 2 + 2 + 2 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-4646452221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4646452201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86045385 + ... + 86045438.

It is an arithmetic number, because the mean of its divisors is an integer number (860454120).

Almost surely, 2^4646452221 is an apocalyptic number.

It is an amenable number.

4646452221 is a deficient number, since it is larger than the sum of its proper divisors (2237180739).

4646452221 is a wasteful number, since it uses less digits than its factorization.

4646452221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172090832 (or 172090826 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 4646452221 is about 68164.8899434306. The cubic root of 4646452221 is about 1668.6829374388.

Adding to 4646452221 its reverse (1222546464), we get a palindrome (5868998685).

The spelling of 4646452221 in words is "four billion, six hundred forty-six million, four hundred fifty-two thousand, two hundred twenty-one".